Armchair



FIG. 1 is a frontal perspective view of the armchair showing my new design;

FIG. 2 is a right elevational view thereof, the left elevational view being a mirror image, thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof. 

The ornamental design of an armchair, as shown and described. 